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Production system and production method for reducing magnesium content in nickel concentrate

A technology of production system and magnesium content, applied in the field of metallurgy, can solve the problems of low economy, decline of concentrate grade, large amount of waste water, etc., achieve significant economic benefits, reduce treatment costs, and reduce treatment costs

Pending Publication Date: 2022-01-04
JINCHUAN GROUP LIMITED +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that the leaching rate of valuable metals such as nickel and copper is high in the process of reducing magnesium. On the one hand, the grade of the concentrate decreases, and on the other hand, the leachate contains various heavy metal ions that require further advanced treatment, resulting in a large amount of wastewater and high treatment costs. higher, less economical

Method used

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  • Production system and production method for reducing magnesium content in nickel concentrate
  • Production system and production method for reducing magnesium content in nickel concentrate
  • Production system and production method for reducing magnesium content in nickel concentrate

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The high-magnesium-nickel concentrate is sent to the concentrate elevator 1 by a forklift, and the concentrate elevator 1 sends the concentrate to the concentrate quantitative silo 2 (the concentrate quantitative silo 2 is designed according to the acid-ore ratio of 4:1) ), stop feeding when the feed reaches the design height, and concentrate the ore for use; send the acid waste water to the design liquid level of the acid waste water tank 6, and measure the acidity 67g / L; open the agitator 4 of the magnesium reduction reactor for stirring, and open the flue gas exhaust Control valve, open acid waste water tank 6 acid waste water pump and concentrate quantitative silo 2 feeding valve, add high-magnesium nickel concentrate and acid waste water synchronously according to the acid-solid ratio 3.5-4:1, after the feeding is completed, close the flue gas exhaust Air control valve, concentrate quantitative silo 2 feeding valves, acid waste water tank 6 acid waste water pump, st...

Embodiment 2

[0043] The high-magnesium-nickel concentrate is sent to the concentrate elevator 1 by a forklift, and the concentrate elevator 1 sends the concentrate to the concentrate quantitative silo 2 (the concentrate quantitative silo 2 is designed according to the acid-ore ratio of 4:1) ), stop feeding when the feed reaches the design height, and concentrate the ore for use; send the acid waste water to the design liquid level of the acid waste water tank 6, measure the acidity 70g / L, and add the magnesium-reducing liquid appropriately when the acidity is too high; open the magnesium-reducing reactor 4 Stir with the agitator, open the flue gas exhaust control valve, open the acid waste water tank 6 acid waste water pump and the concentrate quantitative silo 2 feed valve, and simultaneously add high-magnesium-nickel concentrate and For acid waste water, after the feeding is completed, close the flue gas exhaust control valve, concentrate quantitative hopper 2 discharge valve, acid waste ...

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Abstract

The invention discloses a production system for reducing magnesium content in nickel concentrate. The production system comprises a concentrate elevator, a concentrate quantitative stock bin, a magnesium reduction reactor, a thickener, a supernatant tank, a filter press, a filtrate storage tank, a magnesium-reduced liquid tank and a waste gas absorption tower. A production method comprises the following steps: (1) material adding; (2) material input; (3) steam introduction; (4) material reaction; (5) material discharge; and (6) material reuse. By introducing a high-concentration SO2 reduction environment in smelting flue gas, the reaction potential of acidic wastewater and the concentrate is controlled, the content of magnesium oxide in the concentrate is selectively reduced, and the leaching rate of valuable metals such as nickel, copper and cobalt in the concentrate is reduced to the maximum extent.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a production system and a production method for reducing magnesium content in nickel concentrate. Background technique [0002] In pyrometallurgy of sulfide ore, the content of magnesium oxide in nickel concentrate has a great influence on pyrometallurgy slag formation. High magnesium oxide content increases the melting point of slag formation, increases energy consumption and is not conducive to the separation of slag and nickel. Lead to increased nickel content in slag. Therefore, adopting an effective method to reduce the content of magnesium oxide in nickel concentrate can relax the index requirements for magnesium oxide content in nickel concentrate and reduce the cost of smelting. [0003] In pyrometallurgy of sulfide ores, a large amount of SO containing 2 Smelting flue gas, usually SO 2 Smelting flue gas is purified, washed and removed to produce sulfuri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/02C22B3/06C22B26/22C02F1/70B01D53/78B01D53/50C02F103/16
CPCC22B3/02C22B3/06C22B26/22C02F1/70B01D53/78B01D53/507C02F2103/16B01D2258/0283B01D2258/025Y02P10/20
Inventor 张建玲马旻锐张晗李维舟李燕梅马俊刘广龙刘同银邵德刚赵淑琴柴汀怡
Owner JINCHUAN GROUP LIMITED
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